18067481136 has 160 divisors (see below), whose sum is σ = 54996926400. Its totient is φ = 5659361280.

The previous prime is 18067481071. The next prime is 18067481167. The reversal of 18067481136 is 63118476081.

18067481136 is a `hidden beast` number, since 1 + 80 + 67 + 481 + 1 + 36 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 18067481091 and 18067481100.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5939776 + ... + 5942816.

It is an arithmetic number, because the mean of its divisors is an integer number (343730790).

Almost surely, 2^18067481136 is an apocalyptic number.

18067481136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18067481136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27498463200).

18067481136 is an abundant number, since it is smaller than the sum of its proper divisors (36929445264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18067481136 is a wasteful number, since it uses less digits than its factorization.

18067481136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3884 (or 3872 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 18067481136 in words is "eighteen billion, sixty-seven million, four hundred eighty-one thousand, one hundred thirty-six".